Sound bar



1. Sound bar

1.1 is a perspective view of a sound bar showing the new design;

1.2 is a front view thereof;

1.3 is a rear view thereof;

1.4 is a left side view thereof;

1.5 is a right side view thereof;

1.6 is a top view thereof; and

1.7 is a bottom view thereof.

The broken lines shown in the drawings depict portions of the sound bar that form no part of the claimed design. 

CLAIM The ornamental design for a sound bar, as shown and described. 